chore: remove unused imports

src/compression_engine.rs

@@ -1,8 +1,7 @@
-use anyhow::{Context, Result, anyhow};
+use anyhow::Result;
 use std::io;
 use std::io::{Read, Write};
 use std::path::PathBuf;
-use std::process::{Command, Stdio};
 use strum::IntoEnumIterator;
 
 use log::*;